precision mediump float;

varying lowp vec2 varyTextCoord;

uniform sampler2D colorMap; //2d纹理采样器,默认的激活纹理单元(0)，没有分配值
uniform sampler2D colorMap2;


void main()
{
    vec4 texColor = texture2D(colorMap, varyTextCoord);
    texColor.a = 0.8;
    gl_FragColor = texColor;
    
    
    
}
